When would using an exponential distribution be appropriate? The number of heads

Question

When would using an exponential distribution be appropriate? The number of heads in 100 losses of a fair coin False The number of people who go through the express line in a grocery store in half an hour. The distribution of student's Scores on the Math SATs The waiting time for customers standing in line at a grocery register Customers arrive at a grocery store register at busy times at the rate of 3 Customers in 5 minutes. What is the rate of customers arriving during a quarter hour in a busy period?

Explanation / Answer

12. In probability theory and statistics, the exponential distribution (also known as negative exponential distribution) is the probability distribution that describes the time between events in a Poisson process, i.e. a process in which events occur continuously and independently at a constant average rate.

Hence here the answer is "The number of people who go throught the express line in a grocery store in half an hour".

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